PWM 输出#

介绍#

The pwm_out class is used to control PWM (Pulse Width Modulation) output on a VEX V5 3-Wire port. It allows devices to send variable-width pulse signals to compatible 3-Wire components.

类构造函数#

pwm_out( 
  triport::port &port );

类析构函数#

Destroys the pwm_out object and releases associated resources.

~pwm_out();

参数#

范围

类型

描述

port

triport::port &

The 3-Wire Port the PWM output is connected to, written as Brain.ThreeWirePort.X or ExpanderName.X, where X is the port letter (for example, Brain.ThreeWirePort.A or Expander1.A).

例子#

// Create the pwm_out instance on 3-Wire Port A
pwm_out pwm = pwm_out(Brain.ThreeWirePort.A);

成员功能#

The pwm_out class includes the following member functions:

  • state — Sets the state of the PWM output.

Before calling any pwm_out member functions, a pwm_out instance must be created, as shown below:

/* This constructor is required when using VS Code.
PWM configuration is generated automatically
in VEXcode using the Device Menu. Replace the values
as needed. */

// Create the pwm_out instance on 3-Wire Port A
pwm_out pwm = pwm_out(Brain.ThreeWirePort.A);

state#

将PWM输出状态设置为指定值。

Available Functions 
void state(
 int32_t      value,
 percentUnits units );
Parameters

范围

类型

描述

value

int32_t

PWM 输出的新设置值，范围从 -100% 到 +100%。

units

percentUnits

The unit used to represent the PWM value:

  • percent / pct — percent
Return Values

此函数不返回值。

Notes

  • PWM 输出值范围为 -100% 至 +100%。

  • The only valid unit for PWM output is percent.

Examples 
// Set the PWM Output to 50%
pwm.state(50, percent);

// Set the PWM Output to -75%
pwm.state(-75, percent);
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